2 * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 #ifndef __LOCAL_ST21NFCA_H_
18 #define __LOCAL_ST21NFCA_H_
20 #include <net/nfc/hci.h>
24 /* framing in HCI mode */
25 #define ST21NFCA_SOF_EOF_LEN 2
27 /* Almost every time value is 0 */
28 #define ST21NFCA_HCI_LLC_LEN 1
30 /* Size in worst case :
31 * In normal case CRC len = 2 but byte stuffing
32 * may appear in case one CRC byte = ST21NFCA_SOF_EOF
34 #define ST21NFCA_HCI_LLC_CRC 4
36 #define ST21NFCA_HCI_LLC_LEN_CRC (ST21NFCA_SOF_EOF_LEN + \
37 ST21NFCA_HCI_LLC_LEN + \
39 #define ST21NFCA_HCI_LLC_MIN_SIZE (1 + ST21NFCA_HCI_LLC_LEN_CRC)
41 /* Worst case when adding byte stuffing between each byte */
42 #define ST21NFCA_HCI_LLC_MAX_PAYLOAD 29
43 #define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
44 ST21NFCA_HCI_LLC_MAX_PAYLOAD)
46 #define DRIVER_DESC "HCI NFC driver for ST21NFCA"
48 #define ST21NFCA_HCI_MODE 0
50 #define ST21NFCA_NUM_DEVICES 256
52 int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
53 char *llc_name, int phy_headroom, int phy_tailroom,
54 int phy_payload, struct nfc_hci_dev **hdev);
55 void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
62 struct st21nfca_hci_info {
63 struct nfc_phy_ops *phy_ops;
66 struct nfc_hci_dev *hdev;
68 enum st21nfca_state state;
70 struct mutex info_lock;
73 data_exchange_cb_t async_cb;
74 void *async_cb_context;
78 /* Reader RF commands */
79 #define ST21NFCA_WR_XCHG_DATA 0x10
81 #define ST21NFCA_RF_READER_F_GATE 0x14
82 #define ST21NFCA_RF_READER_F_DATARATE 0x01
83 #define ST21NFCA_RF_READER_F_DATARATE_106 0x01
84 #define ST21NFCA_RF_READER_F_DATARATE_212 0x02
85 #define ST21NFCA_RF_READER_F_DATARATE_424 0x04
87 #endif /* __LOCAL_ST21NFCA_H_ */